San Mateo County property record for 18 Madrone Ct, San Mateo, CA 94403
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 4.5 ba · 3,120 sqft · built 2010 |
| Lot Size | 0.093 acres (4,046 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $1,295,000 (Mar 2011) |
| Tax Bill | $22,161 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 038-430-280 |
| Primary APN | 038-430-280 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 4.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 3,120 sqft Living Area |
| 1st Floor Area | 1,370 sqft |
| 2nd Floor Area | 1,200 sqft |
| Basement Area | 550 sqft |
| Finished Basement | 550 sqft |
| Family Room | Family Room |
| Year Built | Built 2010 |
|---|---|
| Effective Year Built | Effective 2010 |
| Lot Area | 4,046 sqft (0.093 acres) |
| Garage Area | 470 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 18 MADRONE CT |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94403-3179 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 28 OF VERONA RIDGE SUB RSM 133/84-90 |
| Legal Subdivision | VERONA RIDGE SUB |
| Legal Lot Number | 28 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2004 |
| Census Tract | 606700 |
18 Madrone Ct is owned by two individuals who bought it in March 2011.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 205 DE ANZA BLVD, SAN MATEO, CA 94402-3989 |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Mar 8, 2011 · Amount on File |
| Deed Sale | Mar 8, 2011 · Amount on File |
| Deed Document Number | 201127651 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 18 Madrone Ct was $22,161.
Source: San Mateo County assessment roll, as of July 15, 2026
| Type | Name |
|---|---|
| State | California |
| County | San Mateo County |
| Municipality | San Mateo City |
| Elementary School District | San Mateo-Foster City Elementary School District (KG - 08) |
| Secondary School District | San Mateo Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $1,692,296 (+2%) Land $846,148 Building $846,148 | ||
| 2025 | $22,161.00 | $1,659,114 Land $829,557 Building $829,557 | |
| 2023 | $20,582.00 (+6.52%) | $1,594,692 Land $797,346 Building $797,346 | $2,549,700 |
| 2022 | $19,322.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 18 Madrone Ct in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1979.
Source: FEMA National Flood Hazard Layer, effective September 10, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 1 in force |
| Nearby Flood Claims | 1 (1979) |
| Most Recent Claim | Apr 1979 · rainfall accumulation |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Wildfire risk around 18 Madrone Ct is low, with a 0.02% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 94% of the US · lower than 96% of California |
|---|---|
| Wildfire Likelihood | 0.02% annual chance |
| Exposure | Direct burnable vegetation |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | CALIFORNIA WATER SERVICE - SAN MATEO private · serves 103,536 people · EPA ID CA4110008 |
|---|---|
| Water Source | Purchased surface water from SAN FRANCISCO REGIONAL WATER SYSTEM |
| Last State Inspection | Mar 2025 |
| Lead | 4 ppb (2023–2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 165 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable | 1,500 / 50 |
May also be available: Etheric Networks, GeoLinks, Sonic Telecom, T-Mobile.
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